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OIT
OIT 1 Operator-information telex.
2 On-board information terminal.
OITS Organización Internacional de Telecommunicaciones
por Satelites (Int.).
OIU 1 Orientation/introduction unit.
2 Operator interface unit.
OJCS Organization (or Office) of the Joint Chiefs of
Staff (US).
OJT On the job training (DoD).
OKB Experimental construction bureau, where aircraft
are designed and developed (USSR, R).
OKC Over [a named radio station].
OKL Oberkommando der Luftwaffe (G).
OKO Experimental construction section (various,
USSR).
okta Unit of sky area equal to one-eighth of total sky
visible to celestial horizon [previously octa].
OL 1 Operating location.
2 Oesterreichischer Luftfahrtverband [Austrian airtransport
association, Vienna].
OLAN On-board local area network.
OLBR Operational laser-beam recorder.
OLC Operational level of capability, marked by
achievement of different Phases.
OLDI On-line data interchange.
OLDP On-line data processing (or processor).
OLED Organic light-emitting diode.
OLEEA On-line exhaust emissions analysis.
oleo Telescopic strut which absorbs energy of compressive
loads by allowing hydraulic oil or other fluid to escape
under pressure through small restrictor orifice, usually
controlled by one-way valve to reduce rebound.
oleo-pneumatic Absorbing shock by combination of air
compression and forcing liquid through an orifice.
OLEV Orbital life-extension vehicle.
OLF Outlying field.
OLGS Operational-level ground station [OLTGS adds
Tactical].
olive Small ellipsoid resembling an olive threaded on
cable either to act as bearing surface in tubular guideway,
or in continuous row separated by small spheres located
in recesses in olive ends, to provide two-way push/pull
mechanical interconnection (eg in Bloctube system).
Olive Branch route Lo-Level routes for B-52 training in
continental US.
OLM 1 On-line, or operational loads, monitoring, or
measurement.
2 Off-line mapper.
3 Organizational-level maintenance.
4 Octane lean mixture.
Ologs Open-loop oxygen generating system.
OLOS, Olos Out of line of sight.
OLP Open-loop phase.
OLR Offload route[s].
OLRT On-line, real time.
OLS 1 Optical landing system.
2 Operational linescan, or linescan system.
OLTE Optical-line termination equipment.
OLTF Open-loop transfer function.
OLTGS See OLGS.
OLTS Oil-level and temperature sensor.
OM 1 Outer marker.
2 Organizational maintenance.
3 Operation & Maintenance (USAF).
4 Other management.
5 Over maximum (often O/M).
6 Occupational medicine.
7 Operations module.
8 Out [of use] for maintenance.
9 Oil[s], mineral.
OMAG Independent naval aviation group (USSR).
OMAR Optical microwave approach and ranging
(UAV all-weather landing).
OMB 1 Office of Management & Budget (US, White
House).
2 Oilless magnetic bearing.
3 Organic-media blasting.
OMC Organic-matrix composite.
Omcads Oil movement control and distribution system,
manages fuel [not lubricating oil] installation at airport
including separation of contaminants.
OMCFP Optimized MAC computer flight plan.
OMCM Operational and maintenance configuration
management (software).
OMD 1 On-board maintenance documentation.
2 Oils minerals detergent.
OME 1 Operating mass empty, usually same as OWE.
2 Operational mission environment.
Omega Accurate long-range radio navaid of VLF
hyperbolic type, covering entire Earth from eight ground
stations and usable down to SL or underwater.
omega (ω)
1 Angular velocity (SI unit is rad/s).
omni-range
2 Angular frequency.
3 Any generalized frequency, thus ω n is natural
frequency and ω r is undamped natural frequency of rth
mode.
OMEV Independent naval helicopter squadron,
Bulgaria’s naval air unit, previously OPLEV.
OMG Operational manoeuvre group (USSR).
OMI Omnibearing magnetic indicator.
OMIS Operations-management information system.
OMM 1 Organisation Métérologique Mondiale =
WMO (Int.).
2 Oxygen-mask microphone.
OMMS Oxygen-mask-mounted sight.
Omni VOR (colloq.).
omni-axial nozzle Rocket motor nozzle capable of being
vectored to any angle within prescribed limits about pivot
point defined by intersection of axes of symmetry of
propelling system and nozzle.
omni-bearing indicator VOR panel instrument.
omni-bearing selector, OBS Knob on most VOR/ILS
indicators which is turned to each required VOR bearing,
which appears in a three-digit window display, left/right
needle thereafter showing difference from required
heading.
omnidirectional aerial Antenna emitting to all points of
compass (assumed equal signal strength throughout
360°).
omnidirectional ball panel Removable floor panel
containing free-running balls on which cargo containers
are moved.
omnidirectional beacon Fixed ground radio station
giving non-directional signals for airborne DF receivers
(obs).
omniflash beacon Airborne flashing (strobe) light visible
equally through 360° in azimuth.
omni-range See VOR.
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